* PATCH: cyber2010 framebuffer on ARM Netwinder fix...
[not found] ` <20070105152224.GQ15109@deprecation.cyrius.com>
@ 2007-01-09 17:26 ` Woody Suwalski
2007-01-20 0:38 ` Stuart Anderson
0 siblings, 1 reply; 2+ messages in thread
From: Woody Suwalski @ 2007-01-09 17:26 UTC (permalink / raw)
To: linux-fbdev-devel; +Cc: Martin Michlmayr, Stuart Anderson, rmk, linux-kernel
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Martin Michlmayr wrote:
> * Stuart Anderson <anderson@netsweng.com> [2007-01-05 09:40]:
>
>> shark w/o any changes to the kernel. I dug a bit further, both in the
>> driver, and in the HW spec for the shark, and discovered that the video
>> chip on the shark is connected via the VL bus, not the PCI bus. The
>> shark does have a VL-PCI bridge, but there doesn't seem to be anything
>> connected to the PCI side of it (which matches what lspci says). The
>> function containing the patch in question doesn't appear to even run on
>> the shark (there is a VL version that is #ifdef SHARK'd), so I'd have
>> to say the patch would have not impact on the shark.
>>
>
> OK, good news. Thanks for checking. Woody, can you submit the patch
> (with proper intentation) to linux-fbdev-devel@lists.sourceforge.net
>
As suggested - I am sending this patch to fbdev-devel....
The Netwinder machines with Cyber2010 crash badly when starting Xserver.
The workaround is to disable pci burst option for this revision of video
chip.
Thanks, Woody
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: netwinder_cyber2010_burst.patch --]
[-- Type: text/x-patch; name="netwinder_cyber2010_burst.patch", Size: 1271 bytes --]
The Netwinder machines with Cyber2010 crash badly when starting Xserver.
The workaround is to disable pci burst option for this revision of video chip.
Signed-off-by: Woody Suwalski <woodys@xandros.com>
---
--- a/drivers/video/cyber2000fb.c 2006-11-29 16:57:37.000000000 -0500
+++ b/drivers/video/cyber2000fb.c 2007-01-09 12:20:01.000000000 -0500
@@ -1539,16 +1539,24 @@ static int cyberpro_pci_enable_mmio(stru
/*
* Allow the CyberPro to accept PCI burst accesses
*/
- val = cyber2000_grphr(EXT_BUS_CTL, cfb);
- if (!(val & EXT_BUS_CTL_PCIBURST_WRITE)) {
- printk(KERN_INFO "%s: enabling PCI bursts\n", cfb->fb.fix.id);
-
- val |= EXT_BUS_CTL_PCIBURST_WRITE;
-
- if (cfb->id == ID_CYBERPRO_5000)
- val |= EXT_BUS_CTL_PCIBURST_READ;
-
- cyber2000_grphw(EXT_BUS_CTL, val, cfb);
+ if (cfb->id == ID_CYBERPRO_2010)
+ {
+ printk(KERN_INFO "%s: NOT enabling PCI bursts\n", cfb->fb.fix.id);
+ }
+ else
+ {
+ val = cyber2000_grphr(EXT_BUS_CTL, cfb);
+ if (!(val & EXT_BUS_CTL_PCIBURST_WRITE)) {
+ printk(KERN_INFO "%s: enabling PCI bursts\n",
+ cfb->fb.fix.id);
+
+ val |= EXT_BUS_CTL_PCIBURST_WRITE;
+
+ if (cfb->id == ID_CYBERPRO_5000)
+ val |= EXT_BUS_CTL_PCIBURST_READ;
+
+ cyber2000_grphw(EXT_BUS_CTL, val, cfb);
+ }
}
return 0;
^ permalink raw reply [flat|nested] 2+ messages in thread